I have a pt100 probe to monitor the temperature of water pipes. what do i need to hook up the three wires to to see the to see the temperature?

Attach your 100 ohm Platinum RTD to the 3 screws closest to the middle (The two wires of the same color attach as shown on the sticker found on the transmitter). Now connect +24V to the "+" screw. Attach a resistor (200-250 0hms) to the "-" screw. Connect the -24V to the other side of the resistor. As the temperature of your RTD varies from -50 to +100C your resistor will get 4 to 20mA. Use ohms law. If your resistor is 250 ohm, you get 1 to 5 V. If your resistor is connected across the two input screws of a process meter, the meter will read "-50C" to "100C" for minor adjustments, there is a "zero" and "span" on the transmitter.

What are the two adjustment potentiometers for?

One is the offset adjustment and one is the range adjustment. They have icons to show which is which. The offset should be set so that you get a zero degrees C reading with iced water. Then the range should adjusted so that you get 100 with boiling water. You may have to go back and adjust the offset and repeat until you get 0-100

Will this transmitter work properly with a 12V power supply?

Specs say +24VDC and that's what I used to power the sensor and transmitter. At +12VDC your range would be 2mA to 10mA (partial range unusable below 4mA) rather than the standard 4 - 20mA full temp range. I would search for a +5VDC transmitter and regulate the +12VDC to +5VDC.

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TWTADE / -0~100 Celsius RTD PT100 SBW Temperature Sensor Temperature Transmitter Isolated Detector Module -0~100 Degree - 4-20MA

Product ID: 143663744

Details

Brand
TWTADE
Current Rating
20 milliamps
Material
Plastic
Maximum Supply Voltage
24
Style
Modern

⚡24V DC power supply

📈±0.2% full scale accuracy

🌡️0-100°C precision range

5.79 OMR

Duties & taxes included

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Description

🌡️ Stay ahead with pinpoint temperature precision — because every degree counts!

SEAMLESS 4 20 M A OUTPUT - Industry-standard analog output ensures smooth integration with your existing control systems.
ROBUST ISOLATION MODULE - Isolated detector module guarantees signal integrity and protects your equipment from interference.
PLUG AND PLAY INSTALLATION - Integrated mounting and plastic housing make setup quick and hassle-free, saving you valuable time.
COMPACT LIGHTWEIGHT DESIGN - At just 45mm diameter and 25g, it fits effortlessly into any setup without bulk.
PRECISION TEMPERATURE CONTROL - Accurately measures from 0 to 100°C with ±0.2% FSD for reliable data-driven decisions.

The TWTADE PT100 Temperature Transmitter offers precise temperature measurement from 0 to 100°C with ±0.2% accuracy, delivering a reliable 4-20mA analog output powered by 24V DC. Its compact 45mm diameter and lightweight 25g plastic design ensure easy integration and installation, while the isolated detector module protects signal integrity for industrial-grade performance.

Specifications

ASIN	B07RFCM7TX
Best Sellers Rank	#99,279 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #155 in Temperature Probes & Sensors
Brand Name	TWTADE
Current Rating	20 milliamps
Customer Reviews	5.0 5.0 out of 5 stars (6)
Manufacturer	TWTADE
Material Type	Plastic
Maximum Supply Voltage	24 volts_of_direct_current
Measurement Accuracy	±0.2°C
Model	PT100
Mounting Type	Integrated
Number of Items	1
Output Type	Analog
Part Number	-0-100℃
Style Name	Modern
UPC	789659498764
Upper Temperature Rating	100 °C

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